vkCmdPipelineBarrier

vkCmdPipelineBarrier is a function in the Vulkan API used to insert a pipeline barrier into a command buffer. This function is essential for synchronizing access to resources between different pipeline stages and queues. It ensures that the GPU operations are executed in the correct order, preventing data hazards and ensuring proper memory access patterns.

The function takes several parameters, including the command buffer, the source and destination pipeline stages, memory access types, and the resources to be synchronized. The source and destination pipeline stages specify the stages of the pipeline where the barrier is inserted. Memory access types define the types of memory operations that need to be synchronized, such as reads, writes, or both. The resources parameter specifies the memory objects, buffers, or images that are being synchronized.

vkCmdPipelineBarrier is typically used to handle dependencies between different rendering passes, compute shaders, and other GPU operations. It allows developers to control the order of execution and ensure that resources are in the correct state before being used. By using vkCmdPipelineBarrier, developers can optimize performance and avoid potential issues related to out-of-order execution and data hazards.